Study On Preparation Of Cyclophosphazene Materials

Polyphosphazene, as a new kind of organic inorganic hybrid material, is widelyapplied in bio-medical field, due to its wonderful performance. In order to broaden itsapplication, it is important to create new systems. In this dissertation we constructedthree new systems by the introduction of4,4-dihydroxy azobenzene,poly(4-vinylphenol) and polyhedral oligomeric silsesquioxanes firstly. In the first twosystems, we prepared monodisperse microsphere through one pot method. Theformation mechanism and reaction conditions were systematically investigated anddiscussed. We prepared UV-curable film and investigated reaction conditions. Thedetails are as follows:1.The first system: monodisperse microsphere was prepared by the condensationpolymerization of4，4-dihydroxy azobenzene and phosphonitrilic chloride trimerthrough one pot method. The effect of solvent, concentration of monomers, ratio of thereactants, temperature, way of reaction and deacid reagent on the diameter and sizedistribution microsphere was systematically investigated and discussed. Themicrosphere with a regular spherical shape, uniform size and well heat resistance couldbe prepared. The color temperature was also be investigated.2.The second system: monodisperse microsphere was prepared by thecondensation reaction of poly (4-vinylphenol) and phosphonitrilic chloride trimerthrough one pot method. The effect of solvent, concentration of monomers，ratio of thereactants, way of reaction and deacid reagent on microsphere was systematicallyinvestigated and discussed. The obtained microsphere has a regular spherical shape,uniform size and well heat resistance. The performance of dye coating was also beinvestigated preliminary.3.The third system: the optimumconditions of preparation were confirmed by changing type and ratio of reactants through thiol-olefin click reaction. The color,transmission of light, thickness, hardness and thermal property were also beinvestigated.